Swifter drilling from Vitap

PUB. DATE

October 1998

SOURCE

Cabinet Maker;10/02/98, Issue 5108, p24

SOURCE TYPE

Trade Publication

DOC. TYPE

Article

ABSTRACT

Features the Alfa range of semi-automatic boring machines from the Italian manufacturer Vitap. Product features; Includes digital readout for height on horizontal boring; Uses of the two boring heads of the Alfa 2T model.

Reports on a tunnel boring machine being developed by engineers in France and Germany. Testing of the machine in Paris; Minimal settlements in variable grounds; Face control under slurry mode; Retraction of the screw for the slurry system.